⭕ GE Itemiser 3 Desktop Trace Detector, the first trace detector in the world to simultaneously detect positive and negative ions, enabling the detection of a broad range of explosives and narcotics. Detection of both positive and negative ions allows for effective identification from a single sample. Portable Narcotics and Explosives Detection. Optional power supply included (plugs into a cars power outlet). Unit is in working condition and calibrates properly. Owner manuals included. Multi-purpose Calibration and Sample Traps Included. Less than 14 months old. 30 days is the return policy if youre not happy with the unit. Available for shipping or local collection. Ready for work. Easy to maintain, inexpensive to operate. Soft carry case included.